Classification of asphalt
Coal tar asphalt
Coal tar asphalt is a by-product of coking, that is, the black substance that remains in the still after the distillation of tar. The coal tar is only different in physical properties from refined tar. The general mixed tar such as hot processing, through the coking step, so that the gum expansion, free carbon precipitation, it tends to be fixed, if the appropriate heating often can continue to get tar.
Petroleum asphalt
Petroleum asphalt is the residue after distillation of crude oil. According to the degree of refining, it is a liquid, semi-solid or solid at room temperature. Petroleum asphalt is black and shiny, with high temperature sensitivity. Because it has been distilled to more than 400℃ in the production process, it contains very little volatile components, but there may still be high molecular hydrocarbons that have not been volatilized, and the gel properties of these unvolatilized molecules are similar to the aromatic drunken parts of the gas phase, so it is still temperature-sensitive. Clink here for asphalt mixing.
Natural asphalt
Natural asphalt is stored underground, and some form mineral layers or accumulate on the surface of the crust. This kind of asphalt mostly through natural evaporation, oxidation, generally does not contain any toxins.
Application of asphalt
Road engineering
Petroleum asphalt is one of the most widely used main asphalt materials in road engineering. It mainly used for road pavement or workshop floor and other requirements of high strength, wear-resistant, impervious occasions. Because this asphalt contains a large amount of resin, it has a strong adhesive force with fibrous materials such as wood, and has a good solvent effect on organic substances such as benzene and phenols. It is also used as moisture-proof floor coatings in construction projects. Visit ltasphaltplant company to find more information on asphalt mixing plant.
Waterproofing works
Petroleum asphalt has excellent adhesive strength, insulation and water resistance to wood, glass, cement and other building materials, so it is widely used in waterproof and anti-corrosion treatment of buildings. Asphalt concrete or asphalt mortar or linoleum on the roof, bathroom and basement can play a good waterproof role.
Antiseptic treatment
Petroleum asphalt has good corrosion resistance, and it can be used to protect metal pipes. The roofs of buildings are coated with this asphalt to withstand heat and rain. Railroad ties coated with this asphalt are antiseptic and protect the train from corrosive moisture. Because this asphalt is waterproof and antiseptic, it is widely used.